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was actually observed Parser can cast this Group to class phot_pt A time sequence of R- magnitudes

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do we think this happened? Tycho's Stella Nova SN Ia 3C 10 supernova remnant Importance of the event observation should I interrupt my telescope schedule? Publisher thinks (prob=0.98) this is a SN1a with given name Possibility this is associated with object 3C10 For draft controlled vocab for concepts see http://www.ivoa.net/twiki/bin/view/IVOA/VOEventVocabulary

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VOEvent and Registry Author may be registered may be cited by IVORN in VOEvent packet Saves typing Easier for subscriber to pick known authors equivalence of with IVOA Organization Publisher is registered List of authors, How to subscribe Repository is registered Which publishers are kept IVORN resolution. Query interface

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Citation An event can cite another ivo://gcn.nasa/VOEvent#hete_389241a_20050808_230931 Observations can be federated by mutual citation followup observation event collection

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Control Author A sends event E to Subscriber S Subscriber software decides on action.... S can followup everything from A S can followup if importance > threshold (importance is part of every event) S can followup if prob(Supernova) > threshhold section has hypothesis, concept, association S can examine the parameters, images, lightcurves section is observations